Fedora-18-x86_64-Live-KDE.iso: lame question

[Maurizio Marini]

Hello
please excuse very lame question, don't blame me :)
I am downloading this iso:
http://www.mirrorservice.org/sites/dl.fedoraproject.org/pub/fedora/linux//releases/18/Live/x86_64/Fedora-18-x86_64-Live-KDE.iso
that is 831 MB
Well, how can it fit into a normal CD? Aren't  they still 700MB circa?

10x
-m
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